Is Iraq the Next "Failed State" in the Middle East?

This week's brief takeover of the Iraqi parliament in Baghdad's heavily guarded Green Zone may have been political theater, but it was part of a real-life drama that's deadly serious and may or may not have a happy ending for Sunnis, Shia, Kurds — or the United States. American casualties will likely rise in the fight against ISIS -- and in support of a government too weak to hold the country together. We look at the struggle to prevent a bad situation from growing worse.